(a) Why do alkali metals impart colour to the flame? (b) How is Na_(2)CO_(3) obtained by solvay ammonia process? (c ) Which compound of calcium is used in surgical bandages during fractured bone of the body ?

(a) Why do alkali metals impart colour to the flame? (b) How is Na_(2

1.	(a) Why do alkali metals impart colour to the flame? (b) How is Na_(2)CO_(3) obtained by solvay ammonia process? (c ) Which compound of calcium is used in surgical bandages during fractured bone of the body ?
Answer» Solution :(a) For ANSWER, consult section 10.1 (b) For answer,consult section 10.7 (C ) Plaster of Paris `(CaSO_(4).(1)/(2)H_(2)O)` is used in surgical bandages.